Tennessee Triathlon Calendar 2025-2026

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Explore the best triathlons in Tennessee for 2025-2026! Our updated list features 255 exciting races across the region. Find your next race in Tennessee below and join the running community at these great events!

September 2025
Sep
14
Sunday

Pilot Y Tri Super Duper Sprint

Triathlon
Sep
14
Sunday

Oli Via

Trail Run 4 mi 13 mi
Sep
20
Saturday

The Barkley Fall Classic

Trail Run 50 km
Sep
20
Saturday

The Dirt Circuit - Morristown, TN

Backyard Ultra 3 hr 6 hr 12 hr 24 hr
Sep
20
Saturday

George Butler/Bart Williams Memorial Rail Run

5 km
Sep
20
Saturday

Bow Wow Dash

5 km
Sep
20
Saturday

West Tennessee Trail Run

Trail Run 3 mi
Sep
21
Sunday

Whiskey Run Nashville

5 km 10 km 13 mi
Sep
27
Saturday

Music City Run for Dyslexia

5 km 10 km
Sep
27
Saturday

Big South Fork Trail Race

Trail Run 10 km 17 mi
Sep
27
Saturday

Wolfman Trail Race

Trail Run 3 mi 7 mi 14 mi 21 mi
Sep
28
Sunday

Ainsley's Angels Rollin On Rocky Top 5K

5 km
Sep
28
Sunday

Ironman Chattanooga

Triathlon
October 2025
Oct
3
Friday

Horton Trail Race

Trail Run 5 km
Oct
4-5
Sa - Su

Nashville Spartan Event Weekend

Obstacle Run 5 km 10 km 4 hr
Oct
4
Saturday

Champion Paws 5K

5 km
Oct
4
Saturday

Half Marathon at Holston River Park

5 km 10 km 13 mi
Oct
4
Saturday

Little Dog's Backyard Ultra

Backyard Ultra 4 mi
Oct
11
Saturday

Atomic Man Half Iron Triathlon

Triathlon
Oct
17
Friday

Smoky Mountain Very Scary 5K

5 km
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